A multifunctional composite membrane for high-safety lithium-ion batteries

Thermal runaway and dendrite growth in lithium-ion batteries (LIBs) induce serious safety hazards and impede their further applications. Although extensive advances have been attained in terms of LIBs safety, most studies focus only on a single aspect at a time. In this study, a multifunctional comp...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2023-01, Vol.11 (4), p.1774-1784
Main Authors: Gao, Zhihao, Luo, Lin, Wen, Rongyan, Song, Xin, Gao, Zhenyue, Zheng, Zongmin, Zhang, Jianmin
Format: Article
Language:English
Subjects:
Batteries
Dendritic structure
Dimensional stability
Energy storage
Ion currents
Lithium
Lithium-ion batteries
Magnesium
Magnesium hydroxide
Membranes
Nanostructure
Nickel
Polypropylene
Polyvinylidene fluorides
Porosity
Rechargeable batteries
Safety
Short circuits
Thermal runaway
Vinylidene fluoride
Wettability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thermal runaway and dendrite growth in lithium-ion batteries (LIBs) induce serious safety hazards and impede their further applications. Although extensive advances have been attained in terms of LIBs safety, most studies focus only on a single aspect at a time. In this study, a multifunctional composite membrane fabricated by incorporating poly(vinylidene fluoride) (PVDF) with 2D nickel hydroxide nanosheets (NHNs) and magnesium hydroxide nanosheets (MHNs) was reported for the first time. Compared to the commercial polypropylene (PP) membrane and neat PVDF membrane, the composite membrane exhibits various excellent properties, including higher porosity and electrolyte wettability, and better ionic conductivity and lower interfacial resistance. When used in LIBs, the NHN/MHN/PVDF composite membrane can facilitate uniform lithium deposition at the anode side, realizing effective dendrite suppression. Moreover, it can remain dimensionally stable at temperatures up to 150 °C, preventing LIBs from a fast internal short-circuit at the beginning of a thermal runaway situation. Furthermore, the composite membrane demonstrates greatly improved flame retardancy compared to PP and PVDF membranes. We anticipate that this multifunctional membrane is a promising separator candidate for next-generation LIBs and other energy storage devices to meet safety requirements. Thermal runaway and dendrite growth in lithium-ion batteries (LIBs) induce serious safety hazards and impede their further applications.
ISSN:2050-7488
2050-7496
DOI:10.1039/d2ta08690e